SeedSigner User Guide

What is SeedSigner?

SeedSigner is an open-source, air-gapped Bitcoin signing device that helps you manage seed phrases and sign transactions securely. Built using affordable, off-the-shelf hardware components (Raspberry Pi Zero, camera module, and LCD display), SeedSigner provides a stateless solution for Bitcoin key management without storing private keys on the device.

Key Features

🔒 Air-gapped Security: Complete network isolation for maximum security
📱 QR Code Communication: Interact with wallets via QR codes only
🎲 Multiple Entropy Sources: Generate seeds using camera, dice, or calculation methods
🔧 Open Source: Fully auditable code and hardware design
💰 Cost-effective: Build your own device for under $50
🛡️ Stateless Design: No private key storage on device

🌍 User Guides by Language

Choose your preferred language to access the complete SeedSigner user guide:

🇺🇸 English

📖 English User Guide Complete documentation in English

🇪🇸 Español

📖 Guía del Usuario en Español Documentación completa en español

🇫🇷 Français

📖 Guide d’Utilisation en Français Documentation complète en français

🇩🇪 Deutsch

📖 Benutzerhandbuch auf Deutsch Vollständige Dokumentation auf Deutsch

🇮🇹 Italiano

📖 Guida Utente in Italiano Documentazione completa in italiano

🇳🇱 Nederlands

📖 Gebruikershandleiding in het Nederlands Volledige documentatie in het Nederlands

🇨🇦 Català

📖 Guia d’Usuari en Català Documentació completa en català

🇯🇵 日本語 (Beta)

📖 日本語ユーザーガイド 日本語での完全なドキュメント

🇨🇳 简体中文 (Beta)

📖 简体中文用户指南 简体中文完整文档

🤝 Contributing

We welcome contributions to improve and expand this user guide!

How to Contribute

Translations: Help us add new languages or improve existing translations
Content: Suggest improvements to existing documentation
Screenshots: Provide updated screenshots for your language
Bug Reports: Report any errors or unclear instructions

Adding a New Language

Fork this repository
Create a new directory under guides/ using the appropriate language code
Translate the content while maintaining the same structure
Update this main README.md to include your language
Submit a pull request

Language Codes

We use ISO 639-1 language codes for directory naming:

en - English
es - Spanish
fr - French
de - German
it - Italy
nl - Nederlands
ca - Catalan
ja - Japanese
zh - Chinese

🔗 Official Resources

SeedSigner Website: seedsigner.com
Official GitHub: github.com/SeedSigner/seedsigner
Hardware Guide: seedsigner.com/hardware
Community Support: Visit the SeedSigner community forums and chat groups

⚠️ Important Security Notice

SeedSigner is designed for users who understand Bitcoin security principles. Always:

✅ Verify your seed phrase backups
✅ Practice with small amounts first
✅ Maintain air-gap security
✅ Use in private environments
✅ Double-check all transaction details

Remember: Bitcoin transactions are irreversible. Take time to understand each step before proceeding with real funds.

📄 License

This user guide is released under the MIT License. The SeedSigner software and hardware designs are open source - see the official repository for licensing details.

This community-maintained guide is updated regularly. For the latest official information, always refer to the SeedSigner project’s official resources.